+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#ifdef _WIN32
-#include <windows.h>
-#else
-#include <glob.h>
-#include <termios.h>
-#endif
-#include <stdlib.h>
-#include <glib.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-
-// FIXME: Must be moved, or rather passed as function argument.
-#ifdef _WIN32
-static HANDLE hdl;
-#endif
-
-static const char *serial_port_glob[] = {
- /* Linux */
- "/dev/ttyS*",
- "/dev/ttyUSB*",
- "/dev/ttyACM*",
- /* MacOS X */
- "/dev/ttys*",
- "/dev/tty.USB-*",
- "/dev/tty.Modem-*",
- NULL,
-};
-
-SR_PRIV GSList *list_serial_ports(void)
-{
- GSList *ports;
-
-#ifdef _WIN32
- /* TODO */
- ports = NULL;
- ports = g_slist_append(ports, g_strdup("COM1"));
-#else
- glob_t g;
- unsigned int i, j;
-
- ports = NULL;
- for (i = 0; serial_port_glob[i]; i++) {
- if (glob(serial_port_glob[i], 0, NULL, &g))
- continue;
- for (j = 0; j < g.gl_pathc; j++)
- ports = g_slist_append(ports, g_strdup(g.gl_pathv[j]));
- globfree(&g);
- }
-#endif
-
- return ports;
-}
-
-SR_PRIV int serial_open(const char *pathname, int flags)
-{
-#ifdef _WIN32
- /* FIXME: Don't hardcode COM1. */
- hdl = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, 0,
- OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
- if (hdl == INVALID_HANDLE_VALUE) {
- /* TODO: Error handling. */
- }
- return 0;
-#else
- return open(pathname, flags);
-#endif
-}
-
-/*
- * Close the serial port.
- * Returns 0 upon success, -1 upon failure.
- */
-SR_PRIV int serial_close(int fd)
-{
-#ifdef _WIN32
- /* Returns non-zero upon success, 0 upon failure. */
- return (CloseHandle(hdl) == 0) ? -1 : 0;
-#else
- /* Returns 0 upon success, -1 upon failure. */
- return close(fd);
-#endif
-}
-
-/*
- * Flush serial port buffers (if any).
- * Returns 0 upon success, -1 upon failure.
- */
-SR_PRIV int serial_flush(int fd)
-{
-#ifdef _WIN32
- /* Returns non-zero upon success, 0 upon failure. */
- return (PurgeComm(hdl, PURGE_RXCLEAR | PURGE_TXCLEAR) == 0) ? -1 : 0;
-#else
- /* Returns 0 upon success, -1 upon failure. */
- return tcflush(fd, TCIOFLUSH);
-#endif
-}
-
-/*
- * Write a number of bytes to the specified serial port.
- * Returns the number of bytes written, or -1 upon failure.
- */
-SR_PRIV int serial_write(int fd, const void *buf, size_t count)
-{
-#ifdef _WIN32
- DWORD tmp = 0;
-
- /* FIXME */
- /* Returns non-zero upon success, 0 upon failure. */
- WriteFile(hdl, buf, count, &tmp, NULL);
-#else
- /* Returns the number of bytes written, or -1 upon failure. */
- return write(fd, buf, count);
-#endif
-}
-
-/*
- * Read a number of bytes from the specified serial port.
- * Returns the number of bytes read, or -1 upon failure.
- */
-SR_PRIV int serial_read(int fd, void *buf, size_t count)
-{
-#ifdef _WIN32
- DWORD tmp = 0;
-
- /* FIXME */
- /* Returns non-zero upon success, 0 upon failure. */
- return ReadFile(hdl, buf, count, &tmp, NULL);
-#else
- /* Returns the number of bytes read, or -1 upon failure. */
- return read(fd, buf, count);
-#endif
-}
-
-SR_PRIV void *serial_backup_params(int fd)
-{
-#ifdef _WIN32
- /* TODO */
-#else
- struct termios *term;
-
- /* TODO: 'term' is never g_free()'d? */
- if (!(term = g_try_malloc(sizeof(struct termios)))) {
- sr_err("serial: %s: term malloc failed", __func__);
- return -1;
- }
-
- tcgetattr(fd, term);
-
- return term;
-#endif
-}
-
-SR_PRIV void serial_restore_params(int fd, void *backup)
-{
-#ifdef _WIN32
- /* TODO */
-#else
- tcsetattr(fd, TCSADRAIN, (struct termios *)backup);
-#endif
-}
-
-/*
- * Set serial parameters.
- *
- * flowcontrol: 1 = rts/cts, 2 = xon/xoff
- * parity: 0 = none, 1 = even, 2 = odd
- */
-SR_PRIV int serial_set_params(int fd, int baudrate, int bits, int parity,
- int stopbits, int flowcontrol)
-{
-#ifdef _WIN32
- DCB dcb;
-
- if (!GetCommState(hdl, &dcb)) {
- /* TODO: Error handling. */
- return SR_ERR;
- }
-
- switch (baudrate) {
- /* TODO: Support for higher baud rates. */
- case 115200:
- dcb.BaudRate = CBR_115200;
- break;
- case 57600:
- dcb.BaudRate = CBR_57600;
- break;
- case 38400:
- dcb.BaudRate = CBR_38400;
- break;
- case 19200:
- dcb.BaudRate = CBR_19200;
- break;
- case 9600:
- dcb.BaudRate = CBR_9600;
- break;
- case 4800:
- dcb.BaudRate = CBR_4800;
- break;
- case 2400:
- dcb.BaudRate = CBR_2400;
- break;
- default:
- /* TODO: Error handling. */
- break;
- }
- dcb.ByteSize = bits;
- dcb.Parity = NOPARITY; /* TODO: Don't hardcode. */
- dcb.StopBits = ONESTOPBIT; /* TODO: Don't hardcode. */
-
- if (!SetCommState(hdl, &dcb)) {
- /* TODO: Error handling. */
- return SR_ERR;
- }
-#else
- struct termios term;
- speed_t baud;
-
- if (tcgetattr(fd, &term) < 0)
- return SR_ERR;
-
- switch (baudrate) {
- case 2400:
- baud = B2400;
- break;
- case 4800:
- baud = B4800;
- break;
- case 9600:
- baud = B9600;
- break;
- case 38400:
- baud = B38400;
- break;
- case 57600:
- baud = B57600;
- break;
- case 115200:
- baud = B115200;
- break;
-#ifndef __APPLE__
- case 460800:
- baud = B460800;
- break;
-#endif
- default:
- return SR_ERR;
- }
- if (cfsetospeed(&term, baud) < 0)
- return SR_ERR;
- if (cfsetispeed(&term, baud) < 0)
- return SR_ERR;
-
- term.c_cflag &= ~CSIZE;
- switch (bits) {
- case 8:
- term.c_cflag |= CS8;
- break;
- case 7:
- term.c_cflag |= CS7;
- break;
- default:
- return SR_ERR;
- }
-
- term.c_cflag &= ~CSTOPB;
- switch (stopbits) {
- case 1:
- break;
- case 2:
- term.c_cflag |= CSTOPB;
- break;
- default:
- return SR_ERR;
- }
-
- term.c_iflag &= ~(IXON | IXOFF);
- term.c_cflag &= ~CRTSCTS;
- switch (flowcontrol) {
- case 0:
- /* No flow control. */
- break;
- case 1:
- term.c_cflag |= CRTSCTS;
- break;
- case 2:
- term.c_iflag |= IXON | IXOFF;
- break;
- default:
- return SR_ERR;
- }
-
- term.c_iflag &= ~IGNPAR;
- term.c_cflag &= ~(PARODD | PARENB);
- switch (parity) {
- case SERIAL_PARITY_NONE:
- term.c_iflag |= IGNPAR;
- break;
- case SERIAL_PARITY_EVEN:
- term.c_cflag |= PARENB;
- break;
- case SERIAL_PARITY_ODD:
- term.c_cflag |= PARENB | PARODD;
- break;
- default:
- return SR_ERR;
- }
-
- /* Some default parameters */
- term.c_iflag &= ~(ICRNL);
- term.c_lflag &= ~(ICANON | ECHO);
-
- if (tcsetattr(fd, TCSADRAIN, &term) < 0)
- return SR_ERR;
-#endif
-
- return SR_OK;
-}
-
-#define SERIAL_COMM_SPEC "^(\\d+)/([78])([neo])([12])$"
-SR_PRIV int serial_set_paramstr(int fd, const char *paramstr)
-{
- GRegex *reg;
- GMatchInfo *match;
- int speed, databits, parity, stopbits;
- char *mstr;
-
- speed = databits = parity = stopbits = 0;
- reg = g_regex_new(SERIAL_COMM_SPEC, 0, 0, NULL);
- if (g_regex_match(reg, paramstr, 0, &match)) {
- if ((mstr = g_match_info_fetch(match, 1)))
- speed = strtoul(mstr, NULL, 10);
- g_free(mstr);
- if ((mstr = g_match_info_fetch(match, 2)))
- databits = strtoul(mstr, NULL, 10);
- g_free(mstr);
- if ((mstr = g_match_info_fetch(match, 3))) {
- switch (mstr[0]) {
- case 'n':
- parity = SERIAL_PARITY_NONE;
- break;
- case 'e':
- parity = SERIAL_PARITY_EVEN;
- break;
- case 'o':
- parity = SERIAL_PARITY_ODD;
- break;
- }
- }
- g_free(mstr);
- if ((mstr = g_match_info_fetch(match, 4)))
- stopbits = strtoul(mstr, NULL, 10);
- g_free(mstr);
- }
- g_match_info_unref(match);
- g_regex_unref(reg);
-
- if (speed)
- return serial_set_params(fd, speed, databits, parity, stopbits, 0);
- else
- return SR_ERR_ARG;
-}
-
-SR_PRIV int serial_readline(int fd, char **buf, int *buflen,
- uint64_t timeout_ms)
-{
- uint64_t start;
- int maxlen, len;
-
- timeout_ms *= 1000;
- start = g_get_monotonic_time();
-
- maxlen = *buflen;
- *buflen = len = 0;
- while(1) {
- len = maxlen - *buflen - 1;
- if (len < 1)
- break;
- len = serial_read(fd, *buf + *buflen, 1);
- if (len > 0) {
- *buflen += len;
- *(*buf + *buflen) = '\0';
- if (*buflen > 0 && *(*buf + *buflen - 1) == '\r') {
- /* Strip LF and terminate. */
- *(*buf + --*buflen) = '\0';
- break;
- }
- }
- if (g_get_monotonic_time() - start > timeout_ms)
- /* Timeout */
- break;
- g_usleep(2000);
- }
- sr_dbg("Received %d: '%s'.", *buflen, *buf);
-
- return SR_OK;
-}
projects / libsigrok.git / blobdiff